Chase for printers&#39; use.



C. A. ROUSSEAU.

CHASE FOR PRINTERS USE.

APPLICATION msu'mnszr, 191s.

Patented Jan. 16, 1917.

IN VEN TOR.

w if/7 BY A TTOR NE Y8 WITNESS @FFTQ.

CLARENCE a. ROUSSEAU, or nivnnsrnn, CALIFORNIA.

CHASE FOR PRINTERS USE.

Application filed June 21, 1916.

T all whom it may concern:

Be it known that I, CLARENCE A. Roos- SEAU, a citizen of the United States, residing at Riverside, in the county of Riverside and State of California, have invented cer tain new and useful Improvements in Chases for Printers Use, of which the following is a specification.

The present invention relates to chases for printing presses, and more particularly to a chase wherein the page or set-up is automatically locked from the sides by means of pressure applied at one end in the usual manner.

The present invention constitutes an improvement on the printers chase for which I have made application for United. States Letters Patent under date of March l, 1916, Serial No. 82213, and its principal object is similar to that set forth in said prior application, namely to do away with the necessity of employing the usual lock-up stick and quoins at the sideof the chase, thereby reducing the width of the chase required for a set-up of given width, and enabling two 01' more pages to be simultaneously printed on a narrower sheet than when a chase of the ordinary type is employed, by cutting down the margin required between the adjacent pages.

The improvements constituting the present invention enable the chase to be locked up more quickly and more easily, for the reason that the side members, although movable relative to the end members, are at all times held in operative relation therewith. The only operation necessary, therefore, is to lock up the page from the end, in any well known manner, pressure being automatically 1 applied to the sides at the same time.

With the above mentioned and other objects in View, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended; it being understood that various changes in the proportion, form, size and details of construction within the scope of the claims may be re sorted to without departing from the spirit of the invention.

To more fully comprehend the invention, reference should be had to the accompanying drawings, wherein- Figure l is a plan view of my chase, with a page locked up therein. Fig. 2 is an Specification of Letters Patent.

Patented Jan. 16, 1917.

Serial No. 104,279.

enlarged detail plan, showing the construction of the inter-locking corners and the spring of the side members. Fig. 3 is an end elevation of the chase with my improved auxiliaryclamp in position. Fig. 4 is a plan view of the same, portions of the clase being omitted. Fig. 5 is a detailed elevation, enlarged, of one of the inter-locking corners I In the drawings, the reference numerals 1 designate the end members of the chase, and 2 the side members thereof. The two end members are similar in every respect, as are the two side members. Said end members are formed, at their ends, with projecting tongues 3 having inwardly inclined faces at. The side members 2 are formed at their ends with laterally projecting tongues 5 having inwardly inclined faces 6, said tongues 3 and 5 interlocking, as shown in the drawings, to form a mortise joint.

At the ends of the end members 1, on the outer edges thereof, are fixed projecting locking plates 7, adapted to fit loosely with in recesses 8 in the ends of the side members 2. Said locking plates 7 hold the end and side members in interlocking relation, while permitting a limited amount of movement at the joint. For this purpose the recesses 8 are deeper, as shown, than the thickness of the locking plates 7.

The side members 2 are preferably sprung inwardly at their central portions by approximately one sixty-fourth of an inch, in a chase fifteen inches in width, as shown in Fig. 2 of the drawings, where a-a are straight lines extended from the central portions of said side members. The object of this spring in the side members is to compensate for their elasticity to the extent of providing approximately equal lateral pressure on the set-up throughout its entire length.

In setting up a page within the chase, the

end members 1 are first moved inwardly as far as the locking plates 7 will'permit. In this position, the inclined faces 4 and 6 of the mortise tongues 3 and 5 permit the side members 2 to spread apart slightly. The type 9, Fig. 1, is then set up, occupying the full width of the chase, and making a snug fit between the side members 2. A foot stick is then placed at one end of the page, and pressure applied thereto by any well known means, as, for example, by quoins 11. This end pressure not only looks up the form endwise, but also, by spreading the end members 1 to the outward limit of their play, causes the inclined faces 4: and 6 of the mortise tongues 3 and 5 to draw the side members 2 together, thus exerting lateral pressure as well. 'The form is thus automatically locked up laterally by the pressure applied at its end by the quoins 11.

To secure additional side pressure upon the set-up, as a matter of precaution in handling large and heavy forms and carrying the same from the imposing stone to the press, I provide an auxiliary clamp 12, Figs. 3 and L of the drawings, which is placed transversely across the chase, at its central portion, after the same has been locked up as described above. One end 13 of said clamp bears against one of the side members 2, and the other end 1% is spaced from the other side member, to permit of the. introduction therebetween ofa quo-in 15. An aperture 16 is formed in the bridge portion of the clamp, so that a key 17 may be inserted therethrough to lock said quoin 15. This clamp, it is understood, is removed when the form is placed in the press.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is '1. A chase for printing presses comprising end members, side members associated therewith by means of inter-locking joints at their end portions inclined inter-locking tongues adapted to unite said members in movable relation one to the other, and means for limiting the relative movement of said members and for retaining the same in interlocking relation.

3. A chase for printing presses compris-.

ing end members, side members bent inwardly at their central portlons and assoclated 1n limited movable relation with said end members by means of inter-locking tongues having inclined faces, whereby outward movement of said end members causes inward movement of said side members, and means for limiting the relative movement of said members and for retaining the same in inter-locking relation. 7

In testimony whereof I havev signed my name to this specification in the presence of two subscribing witnesses.

CLARENCE A. ROUSSEAU. V

Witnesses CLARA B. Rousseau, BERNICE JONES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

